Trigonometry Identities

Date: 01/07/97 at 20:03:43
From: Stephen A Barder
Subject: Trig Identities
I'm a junior in high school and got this problem for homework today:
Verify the following identity:
sin(x+y+z) = sinxcosycosz + cosxsinycosz + cosxcosysinz - sinxsinysinz
I know how to evaluate stuff like sin(x+y), but I don't even know
where to start with three variables. Your help would be really
appreciated.
Tim Barder